Cisco Certified Network Associate (CCNA) Practice Exam

Which command is used to redistribute routes between a RIP network and an EIGRP network?

1. (config)#router rip

2. (config)#redistribute eigrp AS NUMBER AND THEN METRIC 2

3. (config)#router eigrp AS NUMBER

4. (config)#redistribute rip

The correct answer is: (config)#redistribute eigrp AS NUMBER AND THEN METRIC 2

The command to redistribute routes between a RIP network and an EIGRP network includes both the EIGRP Autonomous System (AS) number and a metric value. This is essential because when redistributing routes from one routing protocol to another, specifying the metric helps ensure that the routes are treated appropriately in terms of cost by the receiving protocol. In this case, when using the command that involves redistributing EIGRP routes, the AS number identifies which EIGRP process to use, while the metric specifies the cost assigned to the redistributed routes. Thus, this command accurately fulfills the requirement for incorporating RIP routes into the EIGRP routing table, allowing the EIGRP router to understand how to treat these routes. For effective redistribution, it's crucial to understand the operation of both RIP and EIGRP, as each has its own metric and administrative distance, which will influence routing decisions. Without the AS number and proper metric, redistribution could lead to inefficient routing or even route flapping, where routes are continuously added and removed from the routing table.